Chusetts



P. A. BISHOP BOBBIN HOLDER AND THREAD TENSION DEVICE.

APPLICATION FILED MAY 4, 191B.

1 324,637 Patented Dec. 9, 1919.

wventoz PETER-A.*BISHOP, 'OF'FALL RIVER, MAS AQHU ETT$ ASSIGNOR OF ONE-HALF T0 HIMSELF AND ONE-HALF CHU'SETTS.

'l-O An'rHUR P. BISHOP, or FALL RIVER, MASSA- BOIBBIN-I-IOLDER AND THREAD-TENSION DEVICE.

Specification of Letters Patent.

Patented Dec. 9, 1919.

Application filed May 4,1918. Serial No. 232,587.

To all whom it may concern Be it known that I, PETER A. BISHOP, of Fall River', in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Bobbin-Holders and Thread-Tension Devices; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to bobbin holders and thread tension devices. In the fabrication of textile goods manufacturers have been compelled to use a warp wind yarn instead of a filling wind yarn because of difficulties presented by the lack of effective tensioning devices for regulating the yarn being wound from the bobbin to thespooh It is the object of my invention to provide an improved, simple and efiicient bobbin holder and thread tensioning device which will permit a quick and accurate positioning of the bobbin and a ready adjustment of the tension parts for regulating the tension on the thread as may be required by the size of the yarn being used, thus elfecting perfect transfer of the filling wind from the bobbin to the spool, the spooled yarn being free of the imperfections which have heretofore made diflicult its use in lieu of a warp wind in the manufacturing of textile fabrics.

In the accompanying drawings, Figure 1 is a side elevation showing my improved bobbin holder secured to the bobbin holder rod of a spooling machine. Fig. 2 is a similar view showing the parts adjusted to a different position.

Referring to the drawings, 1 designates the bobbin frame which is shown provided with a clamping jaw 2 by which the frame is secured to a spooling machine, the frame being adjustable in an arc relatively to the traverse A from which the thread is supplied to spool B. It is shown on a rod 3, being retained in any desired position by a set screw or other fastening means. The bobbin is supported in the frame upon a spindle or post 4 which is bolted or otherwise secured thereto. This post is shaped to readily conform to the opening in the large end of the bobbin, and immediately above the spindle at its point of attachment to the frame I provide an arcual plate 5 which acts as a stop to prevent displacement of the bobbin when the opening in the latter becomes enlarged by wear, the plate 5 limiting the lateral movement of the bobbin under such conditions.

An arm 6 ofthe frame, offset from the axis of the bobbin support, has an upward extension 7 which forms a support for a tension dru1n8 which is detachably bolted to the extension, the latter being slotted, as at 9, to permit longitudinal adjustment of the drum. The axis of the drum is transverse of the axis of the bobbin. Projecting laterally from the periphery 'of the drum is a thread guide shownin the form of a stud 10 about which the thread is drawn in its passage to the spool B. The periphery of the drum and the stud 10 are preferably enameled to permit the yarn to have a free move- 7 ment thereover.

The extreme outer end of the arm 6 has a laterally extending plate 12 which is. bifurcated as at 13, the crotch being in line with the axis of the bobbin support, and designed to receive the yarn from the bobbin, the walls of the crotch forming a guiding means for the yarn in its upward passage to a second guide shown in the form of a stud 14 having a hook 15, the stud being secured to the frame in any preferred manner. Obviously this second guiding member may be dispensed with if desired.

The yarn after passing under the hook 15 is then turned half way around the stud 10 and thence upwardly over the periphery of the drum 8 to the spool B. Under certain conditions, and with different sizes of mate rial being spooled, it becomes necessary to change the tension on the yarn. This may be effected by bodily shifting the entire frame in an arc on rod 3 or by loosening the bolt of the drum 8 and turning the latter about its axis, clockwise for lessening the tension, (the yarn then having contact with less of the surface of the drum) and to the left where an increased tension is required, (the yarn in this instance traveling over a greater portion of the drum). In addition to this adjustment the drum may be moved bodily in the slotted member 9, thus altering its position relative to traverse A.

I claim as my invention:

1. A bobbin holder, comprising a frame constructed. to support a bobbin, a

guide associated therewith, and a tension drum mounted on said frame, and past which the thread from said guide runs, and means whereby said drum may be axially adjusted to increase or diminish the effective peripheral surface of the drum exposed to the thread, thereby to vary the tension exerted by the drum on the thread.

2. A bobbin holder, comprising a frame constructed to support a bobbin, a thread guide associated therewith, a tension drum mounted on said frame, a laterally projecting stud associated with said drum and under which the thread from the guide runs in its passage to the drum, and means whereby said drum may be axially adjusted to in crease or diminish the efiective peripheral surface of the drum exposed to the thread, thereby to vary the tension exerted the drum on the thread.

A bobbin holder comprising a frame constructed to support a bobbin, a thread guide associated therewith, an arm extending fr 111 said frame and having a longitudinally disposed slot, an axis bolt adjustable in said slot, and a tension drum mounted upon said bolt for adjustment thereabout as an axis to increase or diminish the effective peripheral surface of the drum exposed to the thread, thereby to vary the tension exerted by the drum on the thread.

4. A. bobbin holder comprising a frame constructed to support, a bobbin, a thread guide associated therewith, an arm extending from said frame and having a longitudinally disposed slot, an axis bolt adjustable in said slot, a tension drum mounted upon said bolt for adjustment thereabout as an axis to increase or diminish the effective peripheral surface of the drum exposed to the thread, thereby to vary the tension exerted by the drum on the thread, and a stud projecting radially from the tension drum and under which the thread from said guide runs in its passage to the drum.

In testimony whereof, I have signed this specification.

PETER A. BISHOP.

Witnesses:

ARTHUR P. BrsHoP, PATRICK ll. HARRINGTON. 

